Ball Milling to Build the Hybrid Mesocrystals of Ibuprofen and Aragonite

Figure 4

IR spectra of IBU/aragonite before and after ball milling (a); aragonite (zoomed in between 1100 and 650 cm⁻¹) (b); IBU/calcite before and after ball milling (c); calcite (zoomed in between 1100 and 650 cm⁻¹) (d).

(a)

(b)

(c)

(d)